Abaqus 6.8 Extended Functionality from Simulia is an FEA tool that enables engineers to lower costs and reduce cycle times via realistic simulation of products, materials, and process behaviors. Enhancements include new and improved capabilities in general contact; the modeling of spot welds, fasteners, and elastomeric foams; and computational performance. General contact implementation offers a simplified and highly automated method for defining contact interactions. Modeling methods for spot welds and fasteners allow users to create attachment points that follow a model edge or conform to a regular pattern. A low-density foam model enables simulation of energy-absorbing materials in crash applications. In addition, a selective subcycling feature helps engineers in defense and shipbuilding to evaluate the realistic behavior of the very large structures that are common to those industries.